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What are the requirements for foundation of artificial lawn in kindergarten?

Release time:2021-04-26

The type of artificial turf is mainly decided by the local climate, environment and budget. Xiaobian will briefly introduce the cement concrete foundation and asphalt foundation of artificial turf:


First, cement concrete foundation requirements


1. The flatness of the ground: the qualified rate of flatness is above 95%, and the error of 5-meter ruler is 3mm.


2. Slope of the ground: 3‰ -- 4‰ of the central site, turtle-back drainage design. Curve 8‰, straight 5‰, semicircle area 5‰, the surface should be flat and smooth, to ensure drainage.


3. Ground strength and stability:


The surface is uniform and solid, no cracks, no rotten edges, and the seams are straight and smooth. It is better to cut about 6000mm×6000mm. The pad is compacted, and the compactness is more than 95%. After the medium mill is pressed, there is no significant wheel track, loose topsoil, waves and other phenomena.


4. The ground waterproof layer: the use of new PVC thickened waterproof film, the lap should be more than 200mm, the margin of the edge is greater than 150mm.


5. Maintenance period of the ground: the basic maintenance period is 21 days.


6. Ground positioning: for accurate construction and line drawing, strong and distinct markers should be used to mark all lines of the site.


II. Asphalt foundation requirements


1. Ground flatness: the foundation should have certain strength and stability, and the foundation should not produce cracks and uneven frost heaving caused by freezing. The qualified rate of flatness should be more than 95%, and the error of 3-meter ruler should be 3mm.


2. Ground slope: horizontal <1%, longitudinal <1‰, high jump <4‰, the surface should be flat and smooth to ensure drainage.


3. Ground strength and stability:


The asphalt base should preferably be made of bituminous materials with little or no wax, and the bituminous mixture must be fully compacted. The surface is uniform and solid, level off without crack, no rotten edge pile squeeze, no pockmarked surface, smooth and smooth joints. The asphalt concrete surface layer crushed stone diameter is 2-5mm, the oil content is 5.8-6.4%, the joint layer crushed stone particle size is 6-9mm, containing 4.6-5.8%, no soft peeling, no loose topsoil, waves and other phenomena.


4. Ground Drainage: The drainage system must drain water two hours after the heavy rain.


5. Ground maintenance period: basic maintenance period of 28 days.

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